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polarizer for 12-24 DX

Discussion in 'General Technical Discussion' started by manzico, Jul 6, 2005.

  1. I should be picking up a 12-24 DX in a few months followed a few months later by a 70-200 VR. I'm going to have to buy a bunch of filters because I don't have any 77mm lenses right now. I'll need UV/skylight filters for each, as well as a circular polarizer and an IR filter. I'm partial to B+W and have picked out all of the filters I'm going to buy:

    093 IR (I already have a 67mm version of this one)
    010 UV/Haze MRC (already have a 67mm version of this one too)
    Circular Polarizer MRC (already have this one in 67mm as well)

    My concern is, especially with the CP, with vignetting on the 12 side of the 12-24. Should I, instead, buy the slim version of the CP filter? Does anyone have any practical experience with this combo? If I can, I'd prefer to not get the slim version since I find it to easy to end up touching the filter glass with the slim filters.


  2. PJohnP


    Feb 5, 2005
    Dave :

    Depends on the light conditions...

    I've shot with a CP and also a Singh-Ray B/G CP, and generally don't get vignetting, but occasionally when the light angle is "just so" the polarisation effect is severe in the corners. I'd say this is a problem in maybe 1 out of 75 shots for me.

    You will see some effect in the corners in some shots at 12mm, make no mistake, but not necessarily true vignetting.

    John P.
  3. Commodorefirst

    Commodorefirst Admin/Moderator Administrator

    May 1, 2005
    Hello Dave,

    for my 12-24 I ended up getting the Nikon thin circ Polarizer, and I have not had any problems shooting at 12. I am very pleased with the quality, and best of all it still has threads so I can add a ND filter too if I need it without removing the CP.


  4. regit


    Jan 31, 2005
    I've been using the normal B+W Cir. Pol MRC with no vignetting on the 12mm side. That being said, the filter effect will not cover the whole FOV. For example, when using the filter to darken a blue sky, you'll see the effect in only some part of the sky but not all parts. Use it carefully and you can create some interesting effects though.
  5. Hoya makes a thin CP as well. I use it with my 12-24 without effect.

    An after thought. Make sure you get one with a little white "tick" mark on the rotating plate. I bought one which did not have any. The way I've been taught is to rotate the mark towards the direction of the sun. Without the mark would have to figure out how to use it every time. There are enough factors to keep track of without having to try and remember how to set a CP plate.

  6. Gale


    Jan 26, 2005
    Viera Fl
    Only polarizers I use are "Moose" CP by hoya

  7. TOF guy

    TOF guy

    Mar 11, 2005
    For which camera ? Many nikon bodies have relatively weak IR filter (that is filters that let the visible light in filtering the IR out), and IR pollution can be a concern (more than UV IMHO). Therefore what you want is not a UV/skylight filter, but a UV+IR filter: B+W486

  8. thanks everyone

    Lot's of good info here. I was very interested in the last comment about a UV/IR filter. I'm shooting on a D100. I seem to remember the D2H having some response to IR. Something about black fabrics not necessarily looking black in the photos, but I've never noticed anything like that with my camera.

  9. TOF guy

    TOF guy

    Mar 11, 2005
    Re: thanks everyone

    I've bought this filter a few months ago, and did a few tests with/without the filter with my D70 (mostly with a 70-200 2.8G AFS VR ED IF). While I've seen on the dpreview d70 forum a few pics where IR pollution was very strong, my tests show a more subtle difference. It depends on the light and what is being photographed. But it definitely is there and the effect is always detrimental, even if so slightly, to the pic. It is not uniform accross the pic, and how much is there is very depending on the reflecting material, and the lighting. Good luck correcting in post, or trying to correct it with some sort of profiling.

    Definitely much more useful than the UV filter, IMO, if your camera is somewhat sensitive to IR (all the CCD/CMOS sensors are, but Canon for instance uses a strong heat filter in front of its sensors).

  10. Lot's of good info here. I have a D70 as well, but didn't know that it was prone to IR pollution. After reading Thom's article on filters, I've stopped using my UV and will only use it under certain circumstances. I realize that B+W is quality glass, but it is extra glass between sensor and subject.
  11. nfoto

    nfoto Guest

    Why anyone would do his photography the harm of using a polariser on a 12 mm lens is beyond me. But each to his own, I guess.

    Most of our beloved Nikon DSLRs are susceptible to IR contamination, however, this doesn't imply IR always is an issue. For outdoor shooting, the issue, as with film, is more on the UV side (UV makes the sky colours wash out and add to the problem with overexposed sky). Multicoated lenses do attenuate the UV transmitted by them, but in the upper UV-A range (say 390 to 400 nm), even modern lenses pass significant amounts of UV.

    IR typically becomes an issue under two conditions: 1. with flash because all flash units emit strong in IR, and 2. under indoor lighting because some of the light sources may add relatively high amount of. IR, and since the same source is deficient in blue and IR may influence red and blue pixel sites, white-balancing the shots may be tricky and lead to colour impurity. Also note that most dark fabrics are chemically treated and may reflect very strong in IR, or that human skin is a strong IR reflector, and you can understand why colour rendition sometimes can be way off.
  12. Gale


    Jan 26, 2005
    Viera Fl
    Geeee I was about to post...Ask Bjorn :>))))))

    Love your interview. Have it saved :>))

    Thank you !! You are truly an incredible man.
  13. good stuff...

    This thread is definitely proven very helpful. Bjorn... point well taken about the polarizer at 12mm, I know what you mean and will definitely use with caution. Also, I think I will pick up the combo UV/IR filter mentioned as opposed to a strait up UV filter. I wasn't even aware the combo was available. As far as my vignetting question goes, it looks like I shouldn't worry too much, even at 12mm I shouldn't need a slim filter.

    Does it sound like I've got everything or am I off a bit on something.

    thanks again,

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